Programmer Group

1. Producer consumer issues       1.1 summary   2. Multi producer multi consumer problem           2.1 summary   3. Smokers           3.1 summary 4. Reader writer questions             5. Dining problem of philosophers Deadlock may occur   Prevent deadlock   Disadvan ...

1, Overview MySQL performs real-time data synchronization and does not play back the executed import database script. Therefore, before synchronization, the data at both ends should be consistent. Data synchronization: Master slave replication (if the master database hangs up, the slave database will not automatically become the maste ...

Source: explanation of digital logic and Verilog design experiment course, personal notes and sorting. 00 importance of specifications Good programming style is conducive to reduce the consumption of hardware resources and improve the working frequency of the design. Improve the portability and maintainability of the system. The format of ...

Write before Learning K8s, involving this section, here I'll sort it outThe blog content refers to the k8s version upgrade (kubeadm upgrade), the environment is installed through kubeadm, so whether the upgrade is available or not is unknown to the production environmentOfficial website has more detailed and authoritative upgrade documents, ...

N methods of implementing WordCount in Spark    Hello, everyone. I won't introduce myself here. Let's talk about WordCount, that is, word frequency. You may learn from various channels that data processing will bear the brunt of WordCount. Why? Because WordCount is simple. But it can well describe data processing and data stati ...

New static functionArray.ofFunction type://Receive any number and type of parameters, and return an array of these parameters in the order they are passed in (...args?:any[])=>any[];Array.of is used to create a new Array instance with a variable number of parameters. The difference between it and creating arrays through the array constructor ...

1, Bayes theorem 1. Introduction           Bayesian theory is named after Thomas Bayes, A theologian in the 18th century. Generally, the probability of event A under the condition of event B (occurrence) is different from that of event B under the condition of event A (occurrence); However, there i ...

preface Recently, I'm doing simulation again. I need to turn the RGBD camera into a point cloud. Image processing package provided by ROS_ pipeline ROS provides tools for monocular, binocular, depth image processing, camera calibration and visualization, which are included in the integration module image_ In pipeline. There are mainly th ...

Having finished Feign and Ribbon, today we will study another class library developed by Netflix team - Hystrix. At an abstract level, Hystrix is a protector. It can protect our application from down due to a dependent failure. At present, the official has stopped iterating with Hystrix. On the one hand, it is considered that Hystrix is stable ...

1, Array 1. Declaration array // Two ways to declare arrays int array[]; int[] array2;// This is recommended // Open up space array = new int[3]; // Open up 3 spaces (array with length of 3) // Note: after opening up a space, the default value of this type is saved double[] array3 = new double[5];// Declare a double array of length 5 // Tw ...